A Drexel University professor is under fire for this tweet, which appeared on his personal account on Christmas Eve.

He reportedly followed this up with another tweet on Christmas Day, saying "To clarify: when the whites were massacred during the Haitian Revolution, that was a good thing indeed."

Reports on the tweet popped up on several conservative web sites, and the hashtag "White Genocide" was trending on Monday morning.

The university said that it was "aware today of Associate Professor George Ciccariello-Maher's inflammatory tweet, which was posted on his personal Twitter account on Dec. 24, 2016. While the University recognizes the right of its faculty to freely express their thoughts and opinions in public debate, Professor Ciccariello-Maher's comments are utterly reprehensible, deeply disturbing, and do not in any way reflect the values of the University."

The school said it planned to meet with Ciccariello-Maher to talk about it.